#加减乘除，//取整除 %取余 **指数
print("1+1=",1+1)
print("1-1=",1-1)
print("1*1=",1*1)
print("1/1=",1/1)
print("11//2=",11/2)
#赋值运算符 =
num=1+2*3
print(num)


#符合赋值运算符
#+=
num=1
num+=1#num=num+1
print("num+=1:",num)
num-=1
print("num-=1:",num)
num*=4
print("num*=4:",num)
num/=2
print("num/=2:",num)
num =3
num %=2
print("num%=2:",num)
num**=2
print("num**=2",num)
num=9
num//=2
print("num//=2:",num)
